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package howework.demo04;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 *
 * @author 韦永斌
 */
public class Notices {
    private String getTodayName;
    public String getTodayName(){
        Date date=new Date();
        SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
        String dateString=formatter.format(date);
        return dateString;
    }
    
    public String getTomorrowName(){
        Date date=new Date();
        Calendar calendar=new GregorianCalendar();
        calendar.setTime(date);
        calendar.add(calendar.DATE,1 );
        date=calendar.getTime();
        SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
        String dateString=formatter.format(date);
        return dateString;
        
    }
    public void getTodayNotices() throws FileNotFoundException, IOException{
        File file=new File("notices/"+getTodayName+".txt");
        if(!file.exists()){
            FileReader f=new FileReader(file);
            BufferedReader b=new BufferedReader(f);
            String temp=null;
            while((temp=b.readLine())!=null){
                System.out.println(temp);
            }  
        }else{
            System.out.println("今天有史密斯么。");
        }
        
    }
    public boolean setTomorrowNotices(String notices) throws FileNotFoundException, IOException{

            File file=new File("notices");
            if(!file.exists()){
                file.mkdir();
            }
            file=new File("notices/"+getTodayName()+".txt");
            if(!file.exists()){
                file.createNewFile();
            }
             FileOutputStream f=new FileOutputStream(file,true);
        PrintWriter p=new PrintWriter(f,true); 
        p.println(notices);
        System.out.println("成功添加一条明天的备忘信息");
        return true;
    }
  
    public static void main(String[] args) throws IOException{
        Notices n=new Notices();
        String dateString=n.getTodayName();
        System.out.println(dateString);
        String tomorrowString=n.getTomorrowName();
        System.out.println(tomorrowString);
        n.setTomorrowNotices("明天去玩");
        
    }
}
    
